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Apart from being used in the chemical functionalization of 2D surfaces, the use of molecules to generate novel classes of 2D materials has been scarcely investigated. In this talk the impact of molecules in the 2D area will be discussed, paying particular attention to the molecular magnetic materials.¹ In the first part I will focus on the design of molecular 2D magnets that, in contrast to what happens with the inorganic 2D magnets, are chemically stable in open  air, keeping their magnetic properties preserved upon functionalizing their surface with different organic molecules.² In the second part I propose to create hybrid heterostructures by interfacing a layer of a functional molecular material with a 2D material. The aim is that of tuning the properties of the “all surface” 2D material via an active control of the hybrid interface.³ To reach this goal the molecular system of choice will be based on spin-crossover complexes able to switch between two spin states upon the application of an external stimulus (temperature, light or pressure). This concept will provide a new class of stimuli-responsive molecular/2D heterostructures, which may be at the origin of a novel generation of hybrid materials and devices of direct application in highly topical fields like electronics, spintronics or molecular sensing.

References
1. E. Coronado. Nature Rev. Mater. 2020, 5, 87
2. J. Lopez-Cabrelles et al. Nature Chem. 2018, 10, 1001
3. J. Dugay et al. Nano Lett. 2017, 17, 186